Troubleshooting Steps; Troubleshooting Via "Battery Capacity" Led Display - Otto Bock B400 Service Manual

InfoRmaTIon
Experience has shown that problems with the electrical system on the wheelchair are frequently due
to errors and defects in the plug connections and cabling. These areas should therefore always be
examined first.
The display of errors is carried out either through flashing signals on the "battery capacity" LED
display (see section 7.2) or with the help of the hand-held programming device (see section 7.3). The
hand-held programming device can more precisely record the errors with the help of error codes.
Using these instructions you can assign the displayed errors to any of ten different error types.
This allows information about the possible root causes as well as repairs to be deduced.
All faults that have occurred are saved in a list and can be called, e.g., during a general overhaul
of the B400 (see section 8.4.4). The saved data can be used to determine future service and
maintenance intervals, for example.

7.1 Troubleshooting steps

To ensure efficient and successful troubleshooting proceed as follows:
❒ Ascertain whether there is a concrete factor triggering the error or whether the error occurs
sporadically.
❒ Determine the error type.
❒ Check the table of error types (section 7.3, table 7) to determine the possible cause and carry
out the recommended tests and corrective actions.

7.2 Troubleshooting via "battery capacity" LED display

Error messages are displayed via the "battery capacity" LED display as follows:
LED display meaning
Rapid The control system detects an
flashing error.
Slow The control system does not reg-
flashing ister an error trigger, but an error
was possibly triggered before.
flashing the more the battery has
been discharged.
Display continu- The control system does not reg-
ously illuminated ister an error trigger, but an error
was possibly triggered before.
Display not illumi- The control system is not being
nated supplied with power.
Table 5 Identifying the LED error message
B400 Family
The fewer LEDs are
InfoRmaTIon
Remedy
Interpret the flashing signals (see table 6).
Connect the programming device,
read off the error code (see table 7) and
determine the error type (see table 8).
Read the diagnostics report from the control system
and determine the error type (see section 7.3).
Charge the batteries.
Read the diagnostics report from the control system
and determine the error type (see section 7.3).
Check battery charge level Check all connec-
tions between the battery and the control system.
If the connections are alright, the power module
may be defective.
Diagnostics
3
Ottobock | 67